phejlps



G. M. PHELPS. I Printing-Telegraph.

- No. 196,476. Patented. Oct. 23,1877.

- mm m I A ENT- OFF GEORGE. M. rnnnrs', or BROOKLYN, NEW YORK.

IMPROVEMENT m PRmime-T EG;RA.PHS.

Specification forming part of Letters Patent To all whom it may.concern: I Be it known that hfinonen M. Pnnnrs,

of Brooklyn, in; the county of Kings State of New, York, have inventedan Improvement in Printing-Telegraphs, of which the following is aspecification: I

Printing-telegraphs have been made with an escapement that allows; theclock-work to turn the type-wheel, such escapement being actuated by anarmature andopposing magnets, through which electric currents arepassed, of alternate polarity, and the magnet controlling the printinghas been brought into action by stopping the type-wheel for the letterdesired. In this instance the type-wheel magnets and printing-magnetsare in the mainline circuit, and the resistance is great upon lineswhere there are a number of these instruments in the same circuit.

The object of my invention is to lessen the resistance in the line, andthereby allow for operating the instruments with a less batterypower.

To effect these objects I provide an automatic switch, that becomesself-acting when a pause occurs in the movement of the typewheel, andcuts out the type-wheel magnets, and simultaneously closes the circuitto the magnet that liberates the printing mechanism; and as thismechanism operates, the circuit is again closed to the type-wheelmagnets and broken to the printing-magnet. By this arrangement ofdevices the resistance of the line-circuit is lessened, because there isonly the type-wheel magnets in the circuit or the printing-magnet.

In the drawing, Figure 1 is a plan of the instrument; Fig. 2 is a sideview with portions of the gearing and frame removed, and the wireconnections of the magnets are also shown. Fig. 3 represents thecircuit-changer after the printing mechanism has operated, and Fig. 4 isan elevation of the ratchet-wheel and its spring.

The type-wheel a is upon the shaft 1), that is supported in the frame 0,and driven by any suitable train of gearing, d, and a weight or spring.The escapement f and armature g are moved, first one 'way and then theother, by the electro-magnets g, between the cores of which the armatureg vibrates. The shaft h n 196,;226, dated May 9,1877...

October 23, 1877; itPPlfiGiLlilOllfl-ld is. revolved by a train ofgearing,'k, and at the end of said shaft is a wrist-pin or crank,.2',ftl'1at gives motion tothe printing-lever Z. These parts are similarto those shown in former patents granted to me,and a reference Tismadeto my Patent No.'144,285 for a more full' description and representationof the conjstruction and operation of these parts. I how- .ever remarkthat my improvement, hereinafter describechinay be used with otherprinting-telegraphs wherever available.

The shaft m has upon it an arm, 'n, and spring circuit-closer 4, thatis. between the two screw-points 5 and 6, that are upon the insulatedblocks 0 and p, to which the circuitwires 8 and 9 are connected. Theline-wire 10 is connected with the frame of the machine, and when thearm n is in contact with 5 the current passes through 8 to thetype-wheel magnets g g, and-thence to the line 11, to the nextinstrument, or to the battery, as usual; but when the arm n is movedinto contact with 6, the current passes from 10, by frame and a, to 6and 9, to the magnet s, and to the line 11. This magnet s has anarmature, s, and lever t, that holds the tooth 12 on the shaft h, as inmy aforesaid patent but as soon as the electro-magnet s is energized,the hooked lever t is moved, and the shaft 71. and clock-movementliberated, to print the character from the typewheels.

The shaft m has also upon it the double pawl-lever a, one end, 18, ofwhich is near the ratchet-wheel 0; upon the type-wheel shaft b, and theother end, 19, is near the spring-finger 20, that is adjacent to the cam15 on the shaft h.

The operation is, that when the type-wheel is being revolved, theratchet wheel 11 conand maintains contact of the spring-arm 4 with thepoint 5, keeping the circuit through the wire 8 and type-wheel magnets 9closed; but as soon as the rotation of the type-wheel and arm n, bypartially turning the shaft m, so as to press the pawl 18 in between theteeth of o, and close the circuit through at and 6 to the wire 9 andpress-magnet s, the energizing of which latter liberates the shaft h,which re volves, performing the printing, and, by the cam 15 actingagainst the spring-finger w,

stantly presses the end 18 of the lever it away,

is arrested, the spring 20 swings the lever u places the same in :theposition shown in Fi g". 7 r 3, with its inolinecl knife-edge end in ashah 10w notch aeross the end 19 0f the lever In this movement theinclined endof thespringfinger 'w, acting ageinsnthe inolinedexicllQ ofIn the move ment, however, of the lever u, theipewl end 18 V I is notent-irely :cleer'ofihe beet-hot the ratchet Wheel: a! henee, when thetypewheel starts, 1

thetoothof-o, Fig", 3, moves thelever u enough 7 to unlatoh thespring-zfingenw, and that re- 1 VSHIHG'S its normal positionywhown inFig'L'f JJ V and the parts arrexreacly for action, as before'(lBSGIib6LI r r r ratchet-wheelie loose r upon the shaft 11,; andprovideepin, 2.2,there- 7 I on, that is helcl hetween' the spring" 23and 2m. 7 V arm, 24, that is @mmpea firmly to the sheftwby 2 theserew25,

I prefer to place the This allows for: "adjusting the Wheel 1? to itscorrect @osition, and also allows V r a slight yielding movemenbin thedirection of r 7 its rotation, so bhat the impact aml friction betweenthe point: of the pawl 18 and the sun "face of the teeth maynot impedethe free 10- cation of the type-wheel. I '7 V I elaim as.my-invention-+r same, a circuit-changer; operated by a eonnew:

tion to the type-wheel shaft, for controlling" 7' the-printingelectrically when the; type-wheel 7 .stops', substantiallyas'set forth2. Theeombinaisiomin a printingtelegraph instrument, of mechanical powerto revolve other type-wheel and to; actuate: the printing: 1 device, anescapement actuated byrma gnet-o' i ism-t0 set the type-Wheehaneleetro-lnagnet 1 to bring theprinting mechanism-into eeti0n,= V anil a,mechanical circuit-changer to eenneeh 71'', :the type-Wheel magnet isoJzhe main lineand; I

1 disconnect :the impression-magnet, and vice V verse, substantially asset forth; V V 3. Theratehet wheel :1,.pewliever weeping-- fingeriw, 0am15,an(l circuit-changer w, in conn i Z bination with the typewheelendactuating? Y shaft, and the impression mechanism and its 1 aetuetingshaft,substantiallyas set forth. Signed by me this ifith day of April,A,

' Wiiznesses: V GEOXLPINGKNEL; 7 CHAS. H. SMITH.-

'1, In azprinting-telegmph instrument hem- V V V 7 ing a mechanicalpowerrfor revolving the type- I ,7 wheel, andan eleetremagnet forsetting the r

